I'd like to have my sister as my maid of honor and my daughter as my flower girl. My fiance, however, doesn't want a ring bearer. Would it be all right to have a flower girl without a ring bearer, or does she have to have a partner?
You don't need a little girl and a little boy in your wedding. Just having a flower girl is fine. Basically, you should only include the children who are important and close to you -- obviously, your daughter falls into this category -- without worrying about having to match little boys and girls.
Kids at Weddings
Choosing Wedding Attendants
Your Bridal Party